8000812440 has 96 divisors (see below), whose sum is σ = 26042065920. Its totient is φ = 2130315264.

The previous prime is 8000812439. The next prime is 8000812471. The reversal of 8000812440 is 442180008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225769 + ... + 258791.

It is an arithmetic number, because the mean of its divisors is an integer number (271271520).

Almost surely, 2^8000812440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8000812440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13021032960).

8000812440 is an abundant number, since it is smaller than the sum of its proper divisors (18041253480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8000812440 is a wasteful number, since it uses less digits than its factorization.

8000812440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33713 (or 33706 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 8000812440 is about 89447.2606623590. The cubic root of 8000812440 is about 2000.0677010416.

Adding to 8000812440 its reverse (442180008), we get a palindrome (8442992448).

The spelling of 8000812440 in words is "eight billion, eight hundred twelve thousand, four hundred forty".